Grinding-machine.



H.. E. S. CHAYES.

GRINDING WIACHIIJE.v APPLlcAnoN man Aue.1s.,1s15.

Patented May 7,1918.

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www@ b-y @y Amy H. E. S. CHAYES. GRlNDING WACHINF. APPucATloN FILED Ausne. 1915.

Patented May 7,1918.

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H. E. S. CHAYES. GRINDING MACHINE.

APPLICATION FILED AUG-16, 1915.

Patented May 7,1918.

3 SHEETS-SHEET 3- Ill ` HERMAN n. crimes, orivnw YORK, iv. Y.

GRINDNG-MACHINE.

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T0017 wiomz't may concern: j

Be it Iknown that 1, HERMAN E. S; CHAYiis, acitizen of the United States, residingsat'the borough lof Manhattan, in the county of NewYork, city and State of New York, have invented certain new and useful linproveinents in Grindingdiiachines, of which the following isa specification. Y j y My, invention relates to grinding machines, more particularly to` that classof machines known as wet grindersand its novelty lies in the construction and"`adapta-` tion ofits parts.

ln thejeinbodiment hereinafter described l havegdesigned a` machine that is self-contained, the unit of power beingpart of the device and the abrasive element being mountedfondthe power shaftof this unit, with special devices for quickly changing the'abrasive element.

Further 1` have provided means forwetting andcleaning the abrasive element convtinuously.during the operation4 of grinding,

from1a reservoirof water, and means for catching,thevsplash` and drip ofthe water and returning it to the reservoir.l Means forf dressingthe abrasive element is also, provided and the entire grinding device is inclose'd within a casing of neat appearance.

Referring. tothe. drawing, Figure 1 is a top plan view of the grinding machine, some of the parts being r broken away and some shown. in section.` Fig. 2 is a vertical longitudinal section taken on the line 22 of Fig. 1, looking in the direction of the arrows. Fig. 3 is a vertical transverse section taken on the line 3-3 of Fig. 2, looking in the direction ofthe arrows, and Fig. 4 is a detailI plan view partly in section `of the dressing device.` c v c The entire device ismounted on a base 1. The unit of'power may bea motor 2 of any suitable size and design, and having a casing`3 and a drive shaft 4. V `@nthe end of the drive shaft 4 `there is mounted a collare the end `of"whic,h is flushwith the end of the shaft 4. To the end of the shaft 4'tliere i is secured by means of a screw 6 a pulley 7 having a reduced end 8 lthereby forming a shoulder 9. Anabrasive element or stone 10 which may be offcarborundum or like mate rialand circularfin shapeis mounted on the reduced end Sand is held securely clamped between 111 shoulder` 9of the pulley the end,` ofthecollar 5l the l"screw" 6." Thus Spcification of Letters Patent.

Patented nay mais? Application inea August 1e, 1915. serial no. 45,750.

. when the shaft 4revolves the stone "10isalso caused to revolve.

'lhe devices for wetting, cleaning andVV facing the stone 1.0 are mounted and in-v,

closed within acasing 21 which Vis oblong in shape while thetwoA ends and top are j semi-circular in cross-section. vIt is divided,` into two` parts, a main case 21 and a cover 30. rllhe main case 21 has a reversely inclined end22 apertured` at thetop as at` 23 j and atthe bottom as at 24. 1t is provided j with `lugs or feet 25 one onv each side which-` are slotted as at 26 `to engage the heads of screws 27 which secure the main case 21ste the base 1 and at the Sametime provide an adjustment of the case with respect to the centerof the motor-shaft 4. l

The cover 30 `is adapted to rest onv the top of the main case 21 and ischeld in position by lugs `31 integral with the inner sides and which project downwardlybeyond its lower c edge so as to engage the inner sides of the niaincasej21. ThisI arrangement gives aiV perfect ralinement o f the cover with the case and `at thesame. time gives a flush joint on thefoutside.' o o c rllhe cover 30 has an aperture 32 at lthe forward end, lthat is, the end nearest Vthe operator or on the left `as shown in Figs.A 1 andw2, and this aperture registers and communicates with the aperture 23 in the case 21 whenlthe cover 30 is in its proper aperture 33 throughjwhich the motor shaft 4 and the collar 5 project within the casing. An arcof the circular stone 10 projects out through the communicating apertures 23 and 32 in the case 21 and the cover 30 respec? tively. i c c c At the bottom ofthe case 21 therefis provided a reservoir 28 adapted to contain water for moistening the stone 10. The sides of the reservoir 28` are so shaped as to lit snugly within the case 21, while a` spout 29 on one end thereof projects through the aperture 24 and beyond the front of the case 21. j

In front of the casing 21 there is located a hand rest 11 which is preferably made of pressed glass or other imaterial, which may beeasily cleaned. The `end of the rest 11 nearer'tlie case 21 is bifurcated as atf12-"12, forming a semi-circular recess adapted to itclose Vagainst the reversely inclinedend 22 of the main case 2l. The under side of the rest 11 is hollowed out vas at 14 and into this hollow the spout 29 of the .reservoir 28 projects in such position as to be directly under the lower end of an inclined channel 16 located on the upper surface of the hand rest 11 and the central axis of which is in line with the central axis of the casing 21 and the grind-stone10.v

Therupper surfaces 15-15 of the rest 11 on each'side of the channel 16 are so molded as to readily fit the hands of theoperator when in the position of holding an object against the revolving stone. Any water dripping from the object or the lingers of the operator falls into the inclined channel 16, from which it runs into thespout 29v ofthe reservoir 28.

Means for conveying water from the reaervoir 28 tothe grind-stone 10 and cleaning the same, will now be described. A knob 34 ismolded or otherwise secured to one end of a shaft 35, the othervend of which is threaded at 36 and terminates in a reduced portion or small knob 37.

The shaft 35 is adapted to support a stationary bracket 50 and a swivel bracket 40, the latter being shaped in the form of an arml 41 extending from a circular boss or hub 42 one side of which is reduced in diameter to form a boss 44. An undercut iinger 43 protrudes from the side of the arm 4l adjacent to the junction of the arm 41 andv the boss 42. Nea-r the end of the arm 41 there is mounted a pulley 45' which .is supported by a screw 46 the end of which is threaded into the arm 41.

, The stationary bracket 50 is in theform of a bell crank having arms 51 and 52 and a spool-shaped hub 53 having circular flanges 54 and 55 formed at each end, the latter having a notch 56 in its The arm 51 has a pin- 56 near its end which extends horizontally from one sidev of the arm, while at the end of the arm 51 there is mounted a screw 57 which is threaded into the arm 51 and provides a support for a large drive pulley 58 and a smaller pulley 59, which are preferably of one piece of metal.

The other arm 52 of the bell crank 50 has a slot 60 in its yend and in which there is pivoted on a screw 61 a lever arm 62 having a toe 63 on one end and a roller 64 mounted on arscrew 65 threaded into the other end. A flat spring 66 secured to the arm 52 presses against the toe 63. The screw 61 also furnishes a support for a pulley 67, and the arm 52 also carries a roller 68 mounted on a screw 69 which is threaded into the arm 52. Anendless belt 70 is mountedl on the pulleys 67, 59 and 45 and between the rollers 64 and 68, and yit is preferably of elastic material. It has secured to it a block of sponge rubber 71 which is adapted to periphery.

pass over the pulley 67 and through the was ter in the reservoir 28, then between the spring-pressed roller 64 and the roller 68 where the superiiuous water is pressed out, thence over the pulleys 59 and 45 and passing downwardly and against the periphery of the grind stone 10, which is moving in the opposite direction, it again enters the water where the waste of the grinding is washed out of the sponge 7l. A belt 72 transmits the power from the pulley 7 to the pulley 58.

From the foregoing description of the construction of the brackets 40 and 50 it is obvious that I have a support for the Inoving parts that is easy and cheap to manufacture and being in two parts easy to assemble, yet when it is assembled gives all the advantages of one piece construction.

To assemble the brackets 40 and 50 within the main case 21 the procedure is as follows: The swivel bracket 40 is placed against the bracket 50 so that the arm 41 is at right angles to the position shown in Fig. 2,' the undercut finger 43 being in line with the notch 56 in the flange 55. The finger 43 is passed through the notch 56 so that the undercut portion overlies the flange 55 on the bracket 50. The boss 44 on the bracket 40 then slips into a corresponding recess in the bracket 50. The belt 70 is then passed over the pulleys 67, 45 and 59 and between the rollers 64 and 68; then the arm 41 is given a quarter turn with the finger 43 overlying the flange 55. The parts are then placed within the case 21 so that the pin 56 on the stationary bracket 50 protrudes through the hole 19 in the side wall of the case 2 f The shaft 35 is now passed through the hole 17 in one side of the case 21, then through a central bore in the hub 53 and into a threaded bore in the center of the hub 42 of the bracket 40. The reduced end -or knob 37 on the end of the shaft 35 then protrudes through a hole 18 in the opposite wall of the case 21. By turning the knob 34 the threaded end 36 of the shaft 35 screws into the bracket 40 thus binding the two brackets 40 and 50 together and at the same time the knob 34 pressing against the side of the case binds the case between the knob and the flange 54 on the hub 53.

Means for dressing the stone l() is provided for by mounting a shaft 72 in suitable bearings in the side walls of the case 2l. The shaft extends outside of one of the walls and is bent to form a lever handle 73. Within the case 21 and on the shaft 72 there is mounted a holder 74 having a forked end 75, the holder being secured to the shaft 72 by a set screw 76. A plurality of toothed wheels 77 are mounted on a screw 78 between the forked ends they aer adapted to revolve when brought in contact withv rae 1,265,05o` r im the stone 10. Normally the dressers hang down out of the way but when it is necessary to clean or dress up the stone 10 the handle 73 is rocked so as to bring the dressing wheels 77 up into a position indicated by the dotted lines in Fig. 2, where they press against the revolving stone andremove any uneven surface therefrom.

The center of the grind-stone 10 being above the top of the main case 2l makes the screw G quite accessible when the cover 30 of the case is removed thus making it very easy to remove or replace the grindstone.

Inasmuch as many changes could be made in the above construction, and many apparently widely different embodiments of my invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

It is also to be understood that the language used in the following claims is intended to cover all the generic and specific features of the invention herein described and all statements of the scope of the invention which, as a matter of language, might be said to fall therebetween.

I claim:

1. A device of the kind described, including a grinding wheel, an endless conveyer havinga moistener attached thereto and cooperating with said wheel to moisten it, and means for expressing moisture from said moistener. l

2. A device of the kind described, including a grinding. wheel, an endless conveyer having a moistener attached thereto and cooperating with said wheel to moisten it and means for regulating the amount of moisv turel carried by the moistener.

3. A device of the kind described, including a grinding wheel, an endless conveyer having a moistener attached thereto and c0- operating with said wheel to moisten it and means for removing the excessive amount of moisture carried by the moistener. v

4f. A device of the kind described, including a grinding wheel, an endless conveyer having a compressible moistening member attached thereto and cooperating with said l wheel to moisten it and means for compressing the moistening member for expressing excessive moisture therefrom.

5. A device of the kind described, including a grinding wheel, an endless conveyer having a moistener attached thereto and cooperating with said wheel to moisten it and rollers between which the endless belt is arranged to pass for expressing moisture spring pressed rollers between which theendless belt is arranged to pass for expressing moisture from said moistener carried thereby.

7. A device of the kind described, including a grinding wheel, a liquid reservoir and means associated with said grindin wheel and the reservoir to moisten the sai grinding wheel in combination with an arm rest so associated with both the wheel and the reservoir to direct the'drippings from said wheel back to the reservoir.

8. A device of the kind described, including a grinding wheel, a liquid reservoir and means associated with the grinding wheel and the reservoir to moisten the said grinding wheel, in combination with an arm rest having a groove therein and arranged adjacent the said wheel to direct the drippings therefrom back to the reservoir.

9. A device of the kind described, including a grinding wheel, and a moistening element comprising a triangular frame having rollers at each point thereof an endless belt mounted upon said rollers and a moistener attached to said belt and cooperating with said grinding wheel to moisten it.

10. A device of the kind described, in-

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cluding a grinding wheel, and a moistening elementcomprising a knock-down triangular frame havin rollers at each point thereof an endless be t mounted upon said rollers and amoistener attached to said belt and cooperating with said grinding wheel to moisten it.

11. A device of the kind described, including a grinding wheel and a moistening element comprising a separable frame structure, rollers arranged on said frame over` comet or this patent may be obtained for nve cents each, by addressing the Gommisaioner or remata,

Washington, D. C. 

